(57) The device is an agricultural barrow with a plurality of vertical rotating shafts
(3), made up of elements of sectional plate (1.1a,1.1b,1.2a,1.2b) and joined so as
to compose a tubular box structure with tubular supports (2) for the rotating shafts,
and provided, on the external surface, with one or two flanges, and inserted by forcing
them into the top and bottom housings of the structure, so that they form an integral
body with it, and fixed by means of structural adhesives and/or spot welding on a
large surface, with consequent elimination or reduction of induced deformations. In
this way a structure is obtained which is highly resistant to deformation and bending;
the precision that may be obtained in the couplings, the alignments and the parallel
arrangements is very high, thanks to the elimination of welds between the supports
and the structure and therefore of deformations.
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